Definitions of bush fires

Fireground	An area affected or likely to be affected by fire
Strategies	A statement detailing how an objective is to be achieved, determined by the person in charge (incident controller).
Tactic	Allocation of personnel and resources to implement the incident strategies. On larger fires normally determined at division or sector, See Incident Control System.
Ground Fire	A slow burning fire, burning underground in fuels such as peat or humus.
Surface Fire	A fire that travels above the surface in grass, low scrub, leaves and litter.
Crown Fire	A fire, usually fast moving, burning in the tops of the trees and supported by fire below in the ground fuel.
Spot Fire	Isolated fire started ahead of the main fire by sparks, embers or other ignited material, sometimes a distance of several kilometers.
Direct Attack	A method of (extinguishing) suppression where wet or dry firefighting techniques are used right on the fire edge. The fire edge then becomes the containment line (barrier between burnt and un-burnt ground).
Parallel Attack	A method of suppression in which the fireline is constructed approximately parallel to and just far enough away from the fire edge (heat and smoke) to enable fire fighters and equipment to work effectively and safely
Indirect Attack	A method of suppression where backburning is used within as area defined by prepared control lines, generally existing, which may be a considerable distance ahead of the fire
Backburing	Firefighting strategy, as part of an overall plan. A fire started intentionally along the inner edge of a fire line to consume the fuel in the path of a bush fire, either in a parallel attack or an indirect attack to widen an existing containment line.
Hazard Reduction	Removal of combustible fuels by hand clearing, machine clearing or prescribed burning.
Prescribed Burning/ Burn off	The controlled application of fire under specified environmental conditions to a predetermined area and at the time, intensity and rate of spread required to attain planned prescription.